Graco ProMix PD2K Installation Manual page 40

TSL Cup Kit
2. Connect the tubing (73c1) from the barbed fitting
(73b) on the lower throat cartridge to one of
the barbed fittings (73b) on the upper throat
cartridge.* * * Connect tubing (73c2) from the other
barbed fitting (73b) on the upper throat cartridge
to a TSL cup fitting.
* * * No additional fittings or tubing are needed for
the alternate TSL plumbing if the barb fitting (73b)
from the TSL (73) and the second plug (73d)
from the throat cartridge are used by swapping
their positions.
40
Additional Maintenance Maintenance and
Additional Additional Maintenance
The TSL fluid in the TSL reservoir must be replaced
more frequently when the alternate TSL plumbing
is used. This requirement prevents contaminated
TSL from accumulating in the reservoir, causing
fluid line contamination and increased pressure in
the TSL tubes due to thickening viscosity. The TSL
replacement frequency is determined by a number of
factors: Catalyst reactivity, temperature and humidity
of the pump environment, and seal wear condition.
In severe environmental conditions, the TSL can
require weekly replacement.
Another maintenance procedure that extends pump
life is bleeding the fresh TSL into the rod guard during
TSL replacement. This bleed process ensures that
all of the air is removed from the guard and bearing
cartridge, eliminating wet air contamination during
the TSL replacement process.
1. Remove and thoroughly clean the rod guard.
2. Refill the rod guard with fresh TSL.
3. Place the rod guard over the rod.
4. Fill the Reservoir, and let gravity fill the TSL lines.
5. Thread the guard back on to the pump when the
TSL begins to overflow the guard.
NOTICE NOTICE NOTICE
The rod guard displacement-flow volume through
the bearing and barb fittings of the upper cartridge
during high-cycle rates of the pump, or from filling
and the color change process, can create fluid
pressure in the TSL line between the pump's lower
and upper cartridges. Route and anchor the TSL
lines to prevent equipment damage if the lines
develop leaks or separate from a barb fitting.
NOTICE
NOTICE NOTICE
The TSL lines are flexible, clear, and compatible
with TSL. These features make installation
much easier, and allow for visual feedback of
the TSL condition. The TSL tubing should be
replaced to prevent equipment damage from
tubing fluid compatibility failure if the lines become
contaminated with catalyst material for extended
periods of time.
and Precautions Precautions
and Precautions
332457M